15-Day Weather Forecast - Seattle

15-day weather forecast for Seattle: temperatures from 10°C (50°F) to 31°C (88°F). Average daily high 21°C (70°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +19°C

15-Day Temperature Trend

19°11°TodaySep16°12°Tmrw18°12°Sun20°12°Mon20°10°Tue23°10°Wed25°11°Thu31°13°Fri24°15°Sat20°12°Sun19°13°Mon21°13°Tue24°11°Wed21°13°Thu20°12°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +19°/+11°
    feels +18°0 mm · 3%10 km/hUV 5 · Mod
    06:4119:29
  • Sat, Sep 12Tomorrow
    +16°/+12°
    feels +16°1.0 mm · 66%9 km/hUV 5 · Mod
    06:4219:27
  • Sun, Sep 13Sun
    +18°/+12°
    feels +15°6.1 mm · 67%21 km/hUV 3 · Low
    06:4419:24
  • Mon, Sep 14Mon
    +20°/+12°
    feels +19°0 mm · 1%13 km/hUV 5 · Mod
    06:4519:22
  • Tue, Sep 15Tue
    +20°/+10°
    feels +18°0 mm · 1%14 km/hUV 5 · Mod
    06:4619:20
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  • Wed, Sep 16Wed
    +23°/+10°
    feels +22°12 km/hUV 5 · Mod
    06:4819:18
  • Thu, Sep 17Thu
    +25°/+11°
    feels +24°12 km/hUV 5 · Mod
    06:4919:16
  • Fri, Sep 18Fri
    +31°/+13°
    feels +30°0 mm · 1%7 km/hUV 5 · Mod
    06:5019:14
  • Sat, Sep 19Sat
    +24°/+15°
    feels +23°0 mm · 3%14 km/hUV 5 · Mod
    06:5219:12
  • Sun, Sep 20Sun
    +20°/+12°
    feels +18°2.4 mm · 7%11 km/hUV 3 · Low
    06:5319:10
  • Mon, Sep 21Mon
    +19°/+13°
    feels +17°1.5 mm · 11%15 km/hUV 3 · Low
    06:5419:08
  • Tue, Sep 22Tue
    +21°/+13°
    feels +20°0 mm · 6%10 km/hUV 3 · Mod
    06:5619:06
  • Wed, Sep 23Wed
    +24°/+11°
    feels +23°0 mm · 11%7 km/hUV 5 · Mod
    06:5719:04
  • Thu, Sep 24Thu
    +21°/+13°
    feels +20°0 mm · 6%10 km/hUV 3 · Low
    06:5919:02
  • Fri, Sep 25Fri
    +20°/+12°
    feels +18°0 mm · 3%12 km/hUV 4 · Mod
    07:0019:00

Weather Insight

Seattle's 15-day outlook ranges from a low of 10°C to a high of 31°C, with an average daytime high near 21°C. Air quality is currently good (AQI 48), with no notable outdoor health concerns.

Today vs Normal

19°C-2° below normal

The long-term average high for today is 21°C.

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Extended Outlook for Seattle

Over the next 15 days, Seattle is forecast to see temperatures ranging from 9°C to 32°C, averaging a daily high of 21°C. The extended outlook indicates occasional showers on 4 days, with 11 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.